Fuel control mechanism



April 9,9949. G. E. TOWNSEND 2,398,199

'FUEL CONTROL MECHANISM 9 Filed May 1,-1945 2 Sheets-Sheet 1 lune/115m' @enige Z7. Townsencz/ April 9, i946., G. E. TowNsEND FUEL CONTROL MECHANISM Filed May l, 1945` 2 Sheets-Sheet 2 m e w W E e y w Patented Apr. 9, 1946 UNITED STATES PATENT OFFICE FUEL CONTRCL MECHANISM George E. Townsend, Brooklyn, N. Y. Application May 1, 1943, Serial No. 485,345

2 Claims.

This invention relates to new and useful improvements in fuel control mechanisms for internal combustion engines especially designed for gasoline or oil.

The principal object of the present invention is to provide a fuel control wherein acetylene is used as a combustible gas and wherein novel control means are employed for controlling the admission of this gas to an engine especially designed for gasoline or oil.

Other important objects and advantages of the invention will become apparent to the reader of the following description.

In the drawings:

Figure 1 represents a top plan view of the control.

Figure 2 is an end elevational view.

Figure 3 is a longitudinal sectional View.

Figure i is a section on line 4-4 of Figure 3.

Referring to the drawings wherein like numerals designate like parts, it can be seen that the control includes an elongated cylinder 5 in which a piston 6 is operative. This cylinder 5 is threadedly disposed into a chamber 1 which is in communication with a manifold fitting 8 in which a throttle valve 9 is located. This throttle valve 9 has a shaft IU on which is a lever II and to this lever pivotally connects a link I2, this link in turn being connected to a shank I3 projecting from the piston 6.

The piston 6 carries a needle valve I4 operative in a bored seat I5 which projects from a header IB. This header I6 has a passageway I1 therethrough and into this is removably disposed a seat structure I8 to which a fitting I9 is connected, this fitting passing through a pocket 20 in the header I6 and having an opening 2l communicating the interior thereof with said pocket 20. A manually controlled needle valve 22 is operative through the tting I9 and against the seat I8.

Numeral 23 denotes a cut-olf valve having a threaded nipple 24 where it connects with a pipeline to a suitable tank containing calcium carbide.

A fitting 25 communicating with the valve 23 is attached to the header I6 and communicates with the pocket 20. From the fitting 25 a pipe 26 extends to a bored formation 21 on the manifold fitting 8 and this is in communication with the interior of the fitting 8 and at this point, let it be observed that a suction operated air admission valve 28 is provided at this point.

A fuel conduit 29 extends from the cylinder 5 adjacent the seat structure l5 to communicate with the chamber 1 through the orifice 30.

lt is to be observed that the gas used as a fuel comes into the control device by way of the valve 23, In producing the necessary gas, a tank or container can be used and handled with complete safety as the pressure is kept under two atmospheres in pressure. When calcium carbide has been subjected to water, an elfervescent action occurs, the carbide being disintegrated and a precipitate of calcium hydroxide is formed with the result that acetylene passes olf as a gas which, in turn passes on to this device, there to be adjusted to the proper ratio, and admitted to the engine in a combustible form of mixture.

The inlet of gas to the device is controlled primarily through valve 23. Under idling speeds, or speeds below 15 R. P. M., the throttle valve 9 will be closed, as will be understood, by suitable means. With the throttle valve 9 closed, the gas passes from the fitting 25 by way of pipe 26 and formation 21 to the manifold fitting 8, air being sucked into the tting through the air admission valve 28. When the throttle valve 9 is opened for high speeds, the piston 6 is operated to open the needle valve I4 and admit gas to the cylinder 5 for passage to the fitting 8 by way of the conduit 29. The valve 22 may be manipulated to control the discharge of gas past the needle valve I4 to vary the speed of operation as required. When the throttle Valve 9 is closed, the needle valve I4 is closed.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size, and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

1. A fuel control comprising a manifold enibodying a throttle valve having a shaft, a cylinder, a piston operative in the cylinder, said shaft having an arm, a connection between the arm and the piston, said piston carrying a needle valve, a fuel inlet through the cylinder, a seat at the inlet and into which the needle valve is operative, a manual control for the inlet, a conduit for the inlet, and a pipe extending from the inlet directly to the manifold, and an air admission valve for mixing air with fuel passing through said pipe.

2. A fuel control comprising a manifold embodying a throttle valve having a shaft, a cylinder,

' a piston operative in the cylinder, said shaft having an arm, a connection between the arm and the piston, said piston carrying a needle valve, a fuel inlet through the cylinder, a seat at the inlet and into which the needle valve is operative, a manual control for the inlet, a conduit for the inlet, and a pipe extending from the inlet directly to the manifold, and an air admission valve for mixing air with fuel passing through said pipe, and a second pipe extending from the cylinder to terminate at the throttle valve.

GEORGE E. TOWNSEND. 

